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This Concept Map, created with IHMC CmapTools, has information related to: ch 2 networking, variations are thin clients, software layers an important term is Middleware, variations are network computers, Architectural Models are software layers, System Architectures are peer to peer, Architectural Models are variations, System Architectures are client-server, variations are mobile agents, a layer of software whose purpose is to mask heterogeneity and to provide a convienient programming model to application programmers, Fundamental Models are Interactions models, a convienient programming model to application programmers is represented by processes or objects in a set of computers that interactwith eachother to implement communication and resource sharing support for distributed applications, variations are proxy servers and caches, variations are service provided by multiple servers, software layers an important term is Platforms, client-server may be servers may in turn be clients of other servers, Middleware defined as a layer of software whose purpose is to mask heterogeneity, Platforms are defined as the lowest level hardware and software layers for distrubuted systems and applications., Fundamental Models the purpose is to make genaeralizations concerning what is possible or impossible, given those assumptions. generlizations may take the form of general-purpose algorithms or desireable properties that are guranteed., variations are mobile devices and spontaneous interoperation, Fundamental Models are failure models